Julie Andrews as Judith Farrow

Omar Sharif as Feodor Sverdlov

Anthony Quayle as Jack Loder

Dan O'Herlihy as Fergus Stephenson

Sylvia Syms as Margaret Stephenson

Oskar Homolka as General Golitsyn

Bryan Marshall as George MacLeod

David Baron as Richard Paterson

Celia Bannerman as Rachel Paterson

Roger Dann as Colonel Moreau

Sharon Duce as Sandy Mitchell

George Mikell as Major Stukalov

Kate O'Mara as Anna Skriabina

Constantine Gregory as Dimitri Memenov

John Sullivan as 1st KGB Agent

Terence Plummer as 2nd KGB Agent

Leslie Crawford as 3rd KGB Agent

Alexei Jawdokimov as Igor Kalinin

Janet Henfrey as Embassy Section Head